CdSe — Properties & Data | MatWorld

CdSe

semiconductor

· CdSe

Cadmium selenide (CdSe) is a direct-bandgap II-VI semiconductor compound widely used in optoelectronic and photonic devices. It is the material of choice for quantum dots, light-emitting diodes (LEDs), photovoltaic cells, and X-ray and gamma-ray detectors, where its tunable bandgap and strong light absorption make it superior to alternatives like CdS or CdTe for specific wavelength ranges. CdSe is also valued in research applications for solar cells and biosensing, though cadmium toxicity restricts its use in consumer products in some regions, driving parallel development of cadmium-free alternatives.

quantum dots and nanocrystalsoptoelectronic LEDssolar cells and photovoltaicsradiation detectionfluorescent biosensorsphotocatalysis

Compliance & Regulations

?EAR?Conflict Free?RoHS?REACH?TSCA?Prop 65

Units:

Property	Value	Unit	Conditions	Source
Bulk Modulus(K)3 entries	44.84	GPa	—
↳	44.84	GPa	—
↳	48.23	GPa	—
Elastic Compliance Tensor(Sij)	Matrix (redacted)	1/GPa	—
Elastic Anisotropy(AU)	1.027	-	—
Elastic Stiffness Tensor(Cij)	Matrix (redacted)	Pa	—
Poisson's Ratio(ν)2 entries	0.3468	-	—
↳	0.3700	-	—
Shear Modulus(G)3 entries	15.30	GPa	—
↳	15.30	GPa	—
↳	15.50	GPa	—

N entriesMultiple entries per property — large groups are collapsed; click a summary row to expand. Use filters above to narrow by form, heat treatment, basis, or test environment.

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Property	Value	Unit	Conditions	Source
Thermal Conductivity(k)	11.40	W/(m·K)	—

Verified Unverified Low confidence (<80%) Link to source

Property	Value	Unit	Conditions	Source
Density(ρ)	5.417	kg/m³	—

Verified Unverified Low confidence (<80%) Link to source

Property	Value	Unit	Conditions	Source
Band Gap(Eg)2 entries	1.750	eV	—
↳	0.4550	eV	—
Dielectric Constant (Relative Permittivity)(εr)3 entries	12.93	-	—
↳	20.85	-	—
↳	9.638 range 8.021–11.26median of 2 measurements	-	—
Electronic Dielectric Tensor(ε∞)	Matrix (redacted)	-	—
Total Dielectric Tensor(ε)	Matrix (redacted)	-	—
Magnetic Moment(μB)	0.000	µB	—
Piezoelectric Modulus(eij)2 entries	0.04250	C/m²	—
↳	0.7758	C/m²	—
Piezoelectric Stress Tensor(eij)	Matrix (redacted)	C/m²	—
Seebeck Coefficient(S)	-33.62	µV/K	—

N entriesMultiple entries per property — large groups are collapsed; click a summary row to expand. Use filters above to narrow by form, heat treatment, basis, or test environment.

Verified Unverified Low confidence (<80%) Link to source

Property	Value	Unit	Conditions	Source
Energy Above Hull(ΔEhull)	0.00940	eV/atom	—
Formation Energy(ΔHf)2 entries	-0.7504	eV/atom	—
↳	-0.5894	eV/atom	—

N entriesMultiple entries per property — large groups are collapsed; click a summary row to expand. Use filters above to narrow by form, heat treatment, basis, or test environment.

Verified Unverified Low confidence (<80%) Link to source

Regulatory Screening

Environmental

Export Control

RoHS, REACH, and Prop 65 statuses are validated against official substance lists (ECHA SVHC Candidate List, OEHHA Prop 65, RoHS Annex II). Other regulations are estimated from composition and material classification. All screening is a starting point for due diligence — always verify with your supplier before making compliance decisions.